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Two males, one female: triplet-style mating behaviour in the Darwin wasp Xorides ater (Gravenhorst, 1829) (Hymenoptera, Ichneumonidae, Xoridinae) in the Swiss Alps

by: Shaw, Mark R.; Giannotta, Madalene; Herrera-Flórez, Andrés F.; Klopfstein, Seraina

Publication date: 2021-5-21
Usage: Attribution 4.0 International
Topics: Altitudinal distribution, Copulation stance, Phenology
Publisher: Pensoft Publishers
Collection: biodiversity
Contributor: Pensoft Publishers
Language: English
Rights: https://biodiversitylibrary.org/permissions
Rights-holder: Copyright held by individual article author(s).
Volume: 5
Item Size: 14.3M

Abstract: The Darwin wasp Xorides ater is a solitary idiobiont ectoparasitoid of wood-boring beetle larvae. It occurs across the Palaearctic, and in Switzerland seems to be restricted to areas above 980 m altitude. Very little is known about its biology and behaviour. We here report three separate instances of a female X. ater mating simultaneously with two males, observed on the same occasion on a Picea abies woodpile near Lenk, Switzerland. Only two copulae that involved one male and one female were observed at the same time, which might indicate that this mating mode is rather common in X. ater. We illustrate our observations with photo and video material and compare it to mating behaviour known from other species of Darwin wasps.
Addeddate: 2025-05-15 02:12:16
Bhl_virtual_titleid: 210888
Bhl_virtual_volume: v.5 (2021)
Call number: 10_3897_alpento_5_64803
Call-number: 10_3897_alpento_5_64803
Foldoutcount: 0
Genre: article
Identifier: twomalesonefema5shaw
Identifier-ark: ark:/13960/s2tk9nrrd9b
Identifier-bib: 10_3897_alpento_5_64803
Identifier-doi: 10.3897/alpento.5.64803
Ocr: tesseract 5.3.0-6-g76ae
Ocr_detected_lang: en
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Pages: 8
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Possible copyright status: In copyright. Digitized with the permission of the rights holder.
Ppi: 300
Source: Alpine Entomology 5
Year: 2021